| 主权项 |
1. A dispensing system comprising:
a dispenser housing assembly having:
a canister with a first end and a second end;a dispensing mechanism coupled to the canister at the first end thereof, the dispensing mechanism having a piston slidably movable along the canister between the first end and the second end thereof; anda lower cap coupled to the canister at the second end thereof, the lower cap including an upper surface, a lower surface a central body with a central opening extending therethrough, the central opening having an operating region that is centrally disposed on the lower cap, and a slot region adjacent thereto; and a bag assembly having:
a flexible bag defined by a plurality of seals forming the sides and second end, with the first end defined by a fold, the flexible bag defining a fluid tight cavity with an opening at the fold for providing ingress into the fluid tight cavity;an integrated spout and valve member molded as a single member from a single material coupled to the flexible bag at the first end and extending over the fold, the integrated spout and valve member being placed in fluid communication with the fluid tight cavity by way of the opening, the integrated spout and valve member further including:
a spout portion including a spout body with a proximal end and a distal end, an annular base flange coupled to the spout body at the proximal end and extending outwardly therefrom, with an outer flange positioned proximate the distal end of the spout body opposite the annular base flange, the outer flange extending outwardly from the spout body; anda valve portion disposed within the spout body, the valve portion including a central portion with an opening, an annular marginal portion extending therearound, an annular sidewall portion extending from the annular marginal portion toward the distal end of the spout body, and an annular outwardly extending portion extending outwardly from the annular sidewall portion and coupled to an inner surface of the spout body, the valve portion spanning across the spout body, with the opening providing passage therethrough, wherein, the outer flange is extendible through the central opening, whereupon, the spout body is directable into the operating region so that the annular base flange overlies the upper surface of the lower cap and the outer flange overlies the lower surface of the lower cap. |
